Math, asked by sahudeepak2856, 6 months ago

एपी 21 18 15 का कौन सा पद 81 है

Answers

Answered by vikrant2019

7

Answer:

19th term before the First Term 21

Step-by-step explanation:

an=a+(n-1)d

81=21+(n-1)(-3)

81=21+3-3n

3n=24-81

n=-57/3

n= -19

Previous Question

Next Question

Similar questions

Physics, 3 months ago

4 An object is placed at a distance distance of 20 cm in front of a Convex mirrors of focal length 30cm find the position and nature of the Image...

Social Sciences, 3 months ago

the journey of Ferdinand Magellan proved that the Earth is round ture worng right...

Science, 3 months ago

what is food poisoning class 8...

Science, 6 months ago

if there are same no of bird in one tree and in other tree also if one bird will fly and sit on another tree how it will be same wht no we will take to have the same number...

Math, 6 months ago

(b) Principal = 37,500 at 5% p.a. Q. What rate gives 280 as interest on a sum of 3 56,000 in 2 years? Q. Arun bought a car for 33,50,000. The next year, the price went upto 3,70,000. What was the Percentage of price increase? Q. If Meena gives an interest of 345 for one year at 9% rate p.a. What is the sum she has borrowed?

Physics, 11 months ago

In full wave rectification if input frequency is 50Hz then output frequency will be...

Accountancy, 11 months ago

Ram sold goods for rs 3000 to shyam on 1st january 2018 ram drew a bill for 3 months whivh was accepted by shyam before the due date on 1st april 2018 shyam requested for the renewal of this bill for 3 months ram accepted it on the condition that in the new bill...

English, 11 months ago

Write a paragraph on cyclone bulbul.